hdoj 1063

 1 import java.math.BigInteger;
 2 import java.math.BigDecimal;
 3 import java.util.Scanner;
 4 
 5 public class Main {
 6 
 7     public static void main(String[] args) {
 8         Scanner cin = new Scanner(System.in);
 9         int n;
10         BigDecimal a,r;
11         while(cin.hasNextFloat()){
12             a = cin.nextBigDecimal();
13             n = cin.nextInt();
14             r = BigDecimal.ONE;
15             for(int i = 1;i<=n;i++)
16                 r = r.multiply(a);
17             String s = r.stripTrailingZeros().toPlainString();
18             if(s.charAt(0)==‘0‘)
19                 System.out.println(s.substring(1));
20             else
21                 System.out.println(s);
22 
23         }
24     }
25 }